CN100486375C - UE scheduled authorization request assignment and HSUPA scheduling performance improving method - Google Patents

Abstract

Characters of the method are that when receiving authorizing request of dispatch from UE, HSUPA despatcher of Node B assigns dispatching authorities based on Happy Bit Delay Condition information in Node B. the information of Happy Bit Delay Condition is contained in enhanced dedicated physical channel in protocol of Node B application part. The invention also discloses method for enhancing dispatching performance of HSUPA. Estimating authorizing request of dispatch of UE, the method raises dispatching performance of despatcher of Node B.

Description

A kind of UE scheduling authorization request distributes and improves the method for HSUPA scheduling performance

Technical field

The present invention relates to the communications field, especially Wideband Code Division Multiple Access (WCDMA) inserts (WCDMA, Wideband CodeDivision Multiple Access) wireless communication system high speed upstream packet inserts (HSUPA, High Speed Uplink Packet Access) professional scheduling.

Background technology

The third generation (3G) wireless mobile communications is among the continuous evolution variation, constantly introduce new demand and realize low cost and high-performance, at the 5th edition (R5, Release 5) and sixth version (R6, Release6) introduced high speed downlink packet access (HSDPA in respectively, HighSpeed Downlink Access) and HSUPA, its purpose mainly is the overall performance that improves the wireless frequency spectrum utilance and improve system.

HSUPA is the enhancement techniques of WCDMA system to the uplink ability, mainly introduced three kinds of technology: physical layer is mixed automatic repeat requests (HARQ, Hybrid Automatic Repeat Request), based on the fast dispatch of base station (Node B), the short frame transmission of 2 milliseconds of (ms) Transmission Time Intervals (TTI, TransmissionTime Interval).The HSUPA systematic function is significantly improved on the transmission performance of uplink service than traditional WCDMA version, the increase of nearly 50%-70% on power system capacity, the minimizing of 20%-55% is arranged, 50% the increase of on the user grouping calling flow, having an appointment in the delay of end-to-end grouping bag.

Use the WCDMA system of HSUPA technology, comprised radio network controller (RNC, RadioNetwork Controller), Node B and subscriber equipment (UE, User Equipment).NodeB is by measure the upstream noise lifting (RoT of each sub-district in good time, Rise over Thermal), the uplink signal-channel quality of UE, by strengthening dedicated channel (E-DCH, Enhanced Dedicated Channel) upstream data obtains the dispatch request information of UE, determine to distribute to the scheduling authorization of each UE according to information such as the priority of the dispatch request information of the uplink signal-channel quality of the RoT situation of sub-district, UE, UE, UE, scheduling strategy that Node B scheduler adopts and algorithms, send corresponding dispatching command then to corresponding UE; UE is according to scheduling authorization and the non-scheduling authorization of RNC configuration and the buffer state of UE of Node B, in enhancing dedicated channel transport format combination (E-TFC, the E-DCHTransport Format Combination) table of the pre-configured UE of giving of RNC, select suitable transformat to merge and send up E-DCH data to Node B.

In HSUPA, authorize and can send UE to by following three kinds of modes:

One, when Radio Link is set up, distribute initial mandate by service Node B (Serving Node B), pass to UE by RNC, this is authorized and is absolute grant;

Two, Serving Node B sends by E-DCH absolute grant channel (E-AGCH, E-DCH AbsoluteGrant Channel) and licenses to UE, and this is authorized and is absolute grant;

Three, Serving Node B and non-service Node B (Non-Serving Node B) send by E-DCH relative authorization channel (E-RGCH, E-DCH Relative Grant Channel) and license to UE, and this is authorized and is relative authorization, as shown in Figure 1; Can send mandate (UP), the mandate (DOWN) that reduces a step-length that improves a step-length and keep present mandate no change (HOLD) for Serving Node B, can send DOWN and HOLD for Non-Serving Node B, wherein concrete step-length is by the configuration decision of RNC.

In the communication process of UE and Node B, UE mainly passes through following dual mode to the request of authorizing:

One, UE tells by the present scheduling authorization of whether being satisfied with (Happy Bit) that enhancing Dedicated Physical Control Channel (E-DPCCH, E-DCH Dedicated PhysicalControl Channel) carries whether the present mandate of Node B can meet the demands;

If satisfy three following conditions simultaneously, then the value of Happy Bit is set to dissatisfied present mandate (unhappy), otherwise is satisfied present mandate (happy), and three conditions are as described below:

1, the current scheduling mandate (SG, Serving Grant) that is to use when E-TFC selects of UE allows the data dispatching of the maximum of transmission to carry out the transmission of data dispatching;

2, UE has enough power with higher data rate transport;

Used power excursion when 3, selecting based on the E-TFC of the same TTI that transmits together with happy bit, based on the HARQ process (HARQ Process) of current SG * activation and the ratio of total HARQ Process, all E-DCH buffer states (TEBS, Total E-DCH Buffer Status) need to surpass happy bit time delay condition (Happy Bit Delay Condition) ms ability end of transmission;

If nonactivated HARQ Process, then the 1st is satisfied forever; For 10ms TTI, the ratio of the HARQ Process of the activation in the 3rd and total HARQ Process is 1 forever.

Two, UE tells the state that Node B is present by sending schedule information (SI, Scheduling Information);

SI comprises following four partial informations (as shown in Figure 2):

1, highest priority logical channel indicates (HLID, Highest priority Logical channelID): the logic channel that is illustrated in the limit priority of data to be transmitted in the buffering area (Buffer) of UE indicates, if there is the priority of a plurality of logic channels identical and, then fills in that maximum logic channel of data and indicate for the highest;

2, TEBS: that represents all logic channels controls (RLC at Radio Link, Radio LinkControl) layer data that need transmit or retransmit is the data total amount of unit with the byte, what report is TEBS value corresponding index value, the scope of its index value is 0 to 31, and the corresponding relation of TEBS index value and TEBS value is as shown in table 1.

Table 1

The TEBS index	TEBS value (unit: byte)
		0	TEBS＝0
1	0<TEBS≤10
		2	10<TEBS≤14
3	14<TEBS≤18
		4	18<TEBS≤24

5	24<TEBS≤32
		6	32<TEBS≤42
7	42<TEBS≤55
		8	55<TEBS≤73
9	73<TEBS≤97
		10	97<TEBS≤129
11	129<TEBS≤171
		12	171<TEBS≤228
13	228<TEBS≤302
		14	302<TEBS≤401
15	401<TEBS≤533
		16	533<TEBS≤708
17	708<TEBS≤940
		18	940<TEBS≤1248
19	1248<TEBS≤1658
		20	1658<TEBS≤2202
21	2202<TEBS≤2925
		22	2925<TEBS≤3884
23	3884<TEBS≤5160
		24	5160<TEBS≤6853
25	6853<TEBS≤9103
		26	9103<TEBS≤12092
27	12092<TEBS≤16062
		28	16062<TEBS≤21335
29	21335<TEBS≤28339
		30	28339<TEBS≤37642
31	37642<TEBS

3, highest priority logical channel buffer state (HLBS, Highest priority Logicalchannel Buffer Status): expression is accounted for the ratio of TEBS by the data of the logic channel of HLID indication, the HLBS that reports is an index value, the corresponding relation of the index value of HLBS and HLBS value is as shown in table 2, if the index value of TEBS is not 31, then get the upper limit of the TEBS value scope of corresponding TEBS index correspondence, otherwise get 50000 bytes, if the index value of TEBS is 0, then the index of HLBS also is 0.

Table 2

The HLBS index	HLBS value (percentage)
		0	0<HLBS≤4
1	4<HLBS≤6
		2	6<HLBS≤8
3	8<HLBS≤10
		4	10<HLBS≤12
5	12<HLBS≤14
		6	14<HLBS≤17
7	17<HLBS≤21
		8	21<HLBS≤25
9	25<HLBS≤31
		10	31<HLBS≤37
11	37<HLBS≤45
		12	45<HLBS≤55
13	55<HLBS≤68
		14	68<HLBS≤82
15	82<HLBS≤100

4, UE power threshold (UPH, UE Power Headroom): the ratio of the maximum available launch power of expression UE and the transmitting power of Dedicated Physical Control Channel (DPCCH, Dedicated Physical Control Channel), unit is a decibel.

By top explanation, UE mainly passes through dual mode to the solicited message of Node B scheduling, and a kind of is Happy Bit, and another kind is a SI information; Because UE produces the important parameters of Happy Bit: Happy Bit Delay Condition, do not send Node B to, so even Node B knows the SI information of UE, can not determine the demand of UE to scheduling authorization, the SG that distributes to UE when causing dispatching is unreasonable, the SG that may distribute to UE is excessive, cause the waste of resource, also may be too small, cause UE dissatisfied to SG, can adjust by the Happy Bit of back, but extended to the UE request responding time, finally cause the scheduling performance of Node B scheduler to be subjected to certain influence, certain waste can appear in resource simultaneously, and the service delay of UE also has certain increasing.

Summary of the invention

The objective of the invention is to, a kind of dispatching method of Wideband Code Division Multiple Access (WCDMA) access to wireless communication system high speed uplink packet access (HSUPA) business is provided, described method is by estimating the scheduling authorization request of UE accurately, and then improves the scheduling performance of Node B scheduler.

For solving the problems of the technologies described above, the invention provides the distribution method of a kind of UE scheduling authorization request, it is characterized in that: when the HSUPA scheduler of Node B is received the scheduling authorization request of UE, according to the Happy Bit Delay Condition information distribution scheduling authorization among the NodeB, wherein, described Happy BitDelay Condition information is included in the enhancing DPCH of Node B applying portion agreement.

The present invention also provides a kind of method of the HSUPA of raising scheduling performance, and described method comprises:

(1) RNC sends to Node B with Happy Bit Delay Condition parameter;

(2) the SI information that reports according to above-mentioned Happy Bit Delay Condition parameter and UE of the HSUPA scheduler of Node B is determined the dispatch request of UE, and according to dispatch request allocation schedule mandate between UE of determining.

The method according to this invention, described step (2) further comprises following method:

2.1, the E-DCH data that report of Node B demodulation UE, obtain Happy Bit information and SI information;

2.2, the HSUpA scheduler is according to the Happy Bit information and the SI information that demodulate, and RNC disposes the dispatching requirement of determining UE to the Happy Bit Delay Condition of UE;

2.3, Node B is according to the scheduling strategy of HSUPA dispatching algorithm, determines the final scheduling authorization of each UE, sends corresponding dispatching command.

The method according to this invention further comprises following method in step 2.2:

The first step, according to the power excursion of UE power threshold, Dedicated Physical Data Channel, calculate maximum enhancing Dedicated Physical Data Channel power excursion with respect to the power offset information of the Dedicated Physical Control Channel of the power excursion of the special physical controlling channel of upward of telling DSCH Downlink Shared Channel, E-DCH, strengthen the Dedicated Physical Data Channel power excursion according to this and calculate corresponding SG, be designated as SG1;

Second the step, according to the E-TFC and the SG of TEBS, Ha ppy Bit Delay Condition information calculations correspondence, be designated as SG2;

The 3rd SG that goes on foot, gets request is the smaller value of SG1 and SG2.

The method according to this invention further comprises following method in step 2.3:

The first step: can be used for the load of E-DCH according to the RTWP information calculations of the sub-district that measures;

Second step: the priority that data the highest logic channel to be passed is arranged according to UE sorts from high to low to UE;

The 3rd step: travel through all UE, be non-scheduling and the assurance bit rate traffic assignments resource of UE;

The 4th step: the UE of traversal in the formation, according to the SG and the sub-district disposable load allocation schedule mandate of UE request, up to traveled through all UE or sub-district do not have surplus resources to distribute till;

The 5th step: the SG and the original SG that distributes that distribute according to corresponding UE determine the dispatching command that needs send, and send corresponding dispatching command to corresponding UE.

Relative prior art, method provided by the invention has following beneficial effect:

The first, the present invention can estimate the dispatch request of UE accurately.

The second, the present invention can distribute corresponding scheduling authorization according to the dispatch request of the UE of accurate estimation, makes full use of the Radio Resource of system, improves the scheduling performance of scheduler.

The 3rd, the present invention can control the scheduling authorization of UE preferably by estimating the dispatch request of UE accurately, reduces the waste of resource, shortens the response time to UE.

The 4th, the present invention reduces the adjustment frequency to the scheduling authorization of UE by estimating the dispatch request of UE accurately, strengthens the stability of UE speed and the stability of system.

Description of drawings

Fig. 1 is the graph of a relation of RG scheduling and HARQ Process;

Fig. 2 is the structural representation of SI information;

Fig. 3 is the flow chart that calculates the scheduling authorization request of UE;

Fig. 4 is the flow chart that the HSUPA scheduler is determined the dispatching requirement of UE;

Fig. 5 is the flow chart that the HSUPA scheduler is determined the scheduling authorization of UE.

Embodiment

For ease of profound understanding technology contents of the present invention, the present invention is described in detail below in conjunction with drawings and the specific embodiments.

The present invention is by introducing new Happy BitDelay Condition information element (IE in the enhancing DPCH information (E-DCH Infomation) of Node B applying portion (NBAP:Node B Aplication Part) agreement, Information Element), indicate UE to fill in the employed Happy Bit of Happy Bit field Delay Condition information, for the HSUPA scheduler of Node B calculates the SG request of UE and distributes the SG of UE that reference is provided.The HSUPA scheduler of Node B is by above-mentioned Happy Bit Delay Condition parameter, and the SI information that reports of UE just can be calculated the dispatch request of UE, reasonably allocation schedule mandate between UE then exactly.Wherein, the signaling process that relates to comprises: Radio Link is set up request (RADIO LINK SETUP REQUEST), Radio Link increases request (RADIO LINK ADDITION REQUEST), wireless link reconfigured preparation (RADIO LINK RECONFIGURATION PREPARE), wireless link reconfigured request (RADIO LINKSETUP REQUEST).In follow-up explanation, will be with the wireless link reconfigured concrete scheme process of example explanation that is prepared as, as shown in Figure 3, remaining signaling process and wireless link reconfigured preparation are similar, will not remake repetition.

Fig. 3 is the flow chart that calculates the scheduling authorization request of UE.

Process 1: carry out the process of E-DCH business configuration by the reprovision flow process, as shown in Figure 3, concrete step is as follows:

The first step: service wireless network controller (SRNC, Serving RNC) sends wireless link reconfigured preparation to control radio network controller (CRNC, Controlling RNC);

Second step: CRNC sends wireless link reconfigured preparation to Node B;

Second step: CRNC sends wireless link reconfigured preparation to Node B, and its message format is as shown in table 3:

Table 3

Wherein in the table 3 be that field in the form at the end is the new Happy Bit Delay Condition field of introducing in the enhancing DPCH information of Node B applying portion agreement with the grey, be used to refer to UE and fill in the employed Happy Bit of Happy Bit field Delay Condition information, for the HSUPA scheduler of NodeB calculates the SG request of UE and distributes the SG of UE that reference is provided.

The position of this Happy Bit Delay Condition field is not limited to as shown in table 3.The concrete definition of IE " Happybit delay condition " is as shown in table 4:

Table 4

Information Element/Group Name information element/group name claims	Presence selects	The Range scope	Type and Reference reftype	The explanation of the Semantics Description meaning of one's words
					Happy bit delay condition happy bit time delay condition			Enumerated (2ms, 10ms, 20ms, 50ms, 100ms, 200ms, 500ms, 1000ms) enumerate (2 milliseconds, 10 milliseconds, 20 milliseconds, 50 milliseconds, 100 milliseconds, 200 milliseconds, 500 milliseconds, 1000 milliseconds)

The 3rd step: Node B sends wireless link reconfigured finishing to CRNC;

The 4th step: CRNC sends wireless link reconfigured finishing to SRNC;

The 5th step: SRNC sends wireless link reconfigured submission to CRNC;

The 6th step: CRNC sends wireless link reconfigured submission to Node B;

The 7th step: SRNC sends the radio bearer reprovision to UE;

The 8th step: UE sends the radio bearer reprovision to SRNC and finishes.

The E-DCH data that process 2:Node B demodulation UE reports are obtained Happy Bit information and SI information.

Happy Bit information and SI information that the HSUPA scheduler of process 3:Node B reports according to the UE that demodulates, and RNC disposes the dispatching requirement of determining UE to the Happy Bit Delay Condition of this UE, as shown in Figure 4, concrete steps are as follows:

The first step: according to the power excursion (PO of UPH, Dedicated Physical Data Channel _d), with respect to the power excursion (PO of the special physical controlling channel of upward of telling DSCH Downlink Shared Channel _Hs), the power excursion (PO of the Dedicated Physical Control Channel of E-DCH _Ec) etc. the POed of information calculations maximum, computing formula is as follows:

PO _ed＝PO _all-PO _d-PO _hs-PO _ec

PO wherein _AllFor UPH is converted into linear power than value afterwards;

According to PO _EdAnd PO _EdSearch corresponding SG with the mapping table of SG, be designated as SG1;

Second step: E-TFC and SG according to information calculations correspondences such as TEBS, Happy Bit Delay Condition are designated as SG2;

Table look-up according to the TEBS index value and to obtain corresponding TEBS value, be designated as BuffSize;

Calculating according to the number of the E-DCH TTI of configuration and the HARQ Process of activation will be in the data block size of single TTI of Happy BitDelay Condition millisecond end of transmission needs, and computing formula is as follows:

TB _Size＝(BuffSize*HP _act)/(HBDC*TTI*HP _all)

Wherein: TB _SizeBe the transmission block size that single TTI need transmit, HP _ActBe the number of the HARQProcess that activates, HP _AllNumber for all HARQ Process;

According to TB _SizeSearch corresponding E-TFC, the value of E-TFC is that the transmission block size of all E-TFC correspondences is more than or equal to TB _SizeMinimum value;

E-TFC and PO according to the RNC configuration _EdCorresponding relation search corresponding SG, be designated as SG2;

The 3rd step: the SG that gets request is the smaller value of SG1 and SG2.

Process 4: according to the up available noise lifting resource of sub-district, the processing resource that Node B can use, the dispatch request of all UE, the information such as priority of UE, scheduling strategy in conjunction with the HSUPA dispatching algorithm of Node B carries out resource allocation between UE, determine the final scheduling authorization of each UE, send corresponding dispatching command, as shown in Figure 5, concrete steps are as follows:

The first step: can be used for the load of E-DCH according to the information calculations such as RTWP of the sub-district that measures, be designated as Load _E-DCH

Second step: the priority that data the highest logic channel to be passed is arranged according to UE sorts from high to low to UE;

The 3rd step: travel through all UE,, upgrade remaining Load for non-scheduling (Non-Schedule) and assurance bit rate (GBR, Grant Bit Rate) the traffic assignments resource of UE _E-DCH

The 4th step: the UE of traversal in the formation, according to the SG and the sub-district disposable load allocation schedule mandate of UE request, up to traveled through all UE or sub-district do not have surplus resources to distribute till;

The 5th step: the SG and the original SG that distributes that distribute according to corresponding UE determine the dispatching command that needs send, and send corresponding dispatching command to corresponding UE;

If can adjust scheduling authorization with RG, then preferentially use E-RGCH to adjust, otherwise, use E-AGCH to adjust.

By method of the present invention, RNC is transmitting Happy Bit Delay Condition parameter in the UE, also pass to Node B, the SI information that the HSUPA scheduler of Node B reports by this parameter and UE is calculated the dispatch request of UE accurately, then reasonably allocation schedule mandate between UE.When Node B receives the SI information that UE reports, can calculate the dispatching requirement of UE like this according to Buffer state, available horsepower and the Happy Bit Delay Condition of the UE in the SI information, between UE, distribute rational scheduling authorization.

Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims (5)

1, the distribution method of a kind of UE scheduling authorization request, it is characterized in that: when the HSUPA scheduler of Node B is received HappY Bit information that UE reports and schedule information SI, determine the scheduling authorization request of UE in conjunction with the Happy Bit Delay Condition information among the Node B, again according to the scheduling strategy allocation schedule mandate of HSUPA dispatching algorithm, wherein, described Happy Bit Delay Condition information is included in the enhancing DPCH of Node B applying portion agreement.

2, a kind of method that improves the HSUPA scheduling performance, described method comprises:

(1) RNC sends to Node B with Happy Bit Delay Condition parameter;

(2) the Happy Bit information that reports according to above-mentioned Happy Bit Delay Condition parameter and UE of the HSUPA scheduler of Node B and the schedule information SI scheduling authorization request of determining UE, and according to scheduling strategy allocation schedule mandate between UE of HSUPA dispatching algorithm.

3, method as claimed in claim 2 is characterized in that: described step (2) further comprises following method:

2.1, the E-DCH data that report of Node B demodulation UE, obtain Happy Bit information and schedule information SI, E-DCH is for strengthening dedicated channel;

2.2, the HSUPA scheduler is according to the Happy Bit information and the schedule information SI that demodulate, and RNC disposes the scheduling authorization request of determining UE to the Happy Bit Delay Condition of UE;

2.3, Node B is according to the scheduling strategy of HSUPA dispatching algorithm, determines the final scheduling authorization of each UE, sends corresponding dispatching command.

4, method as claimed in claim 3 is characterized in that: further comprise following method in step 2.2:

The first step, calculate the power excursion of maximum enhancing Dedicated Physical Data Channel according to the power excursion of UE power threshold, Dedicated Physical Data Channel, with respect to the power offset information of the Dedicated Physical Control Channel of the power excursion of the special physical controlling channel of upward of high speed descending sharing channel, E-DCH, power excursion according to the enhancing Dedicated Physical Data Channel of this maximum calculates corresponding scheduling authorization, is designated as SG1;

Second step, according to the E-TFC and the scheduling authorization of TEBS, Happy Bit Delay Condition information calculations correspondence, be designated as SG2, TEBS be all E-DCH buffer states, E-TFC makes up for strengthening dedicated channel transport format;

The 3rd scheduling authorization that goes on foot, gets request is the smaller value of SG1 and SG2.

5, method as claimed in claim 3 is characterized in that: further comprise following method in step 2.3:

The first step: can be used for the load of E-DCH according to the RTWP information calculations of the sub-district that measures;

Second step: the priority that data the highest logic channel to be passed is arranged according to UE sorts from high to low to UE;

The 3rd step: travel through all UE, be non-scheduling and the assurance bit rate traffic assignments resource of UE;

The 4th step: the UE of traversal in the formation, according to the scheduling authorization and the sub-district disposable load allocation schedule mandate of UE request, up to traveled through all UE or sub-district do not have surplus resources to distribute till;

The 5th step: determine the dispatching command that needs send according to scheduling authorization and the original scheduling authorization that distributes that corresponding UE distributes, send corresponding dispatching command to corresponding UE.

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